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local vm = require 'vm.vm'
local guide = require 'parser.guide'
local library = require 'library'
local function eachFieldInLibrary(source, lib, results)
if not lib or not lib.child then
return
end
for _, value in pairs(lib.child) do
results[#results+1] = value
end
end
local function eachFieldOfLibrary(results)
for _, lib in pairs(library.global) do
results[#results+1] = lib
end
end
local function eachField(source)
while source.type == 'paren' do
source = source.exp
end
local results = guide.requestFields(source)
local lib = vm.getLibrary(source)
if lib then
eachFieldInLibrary(source, lib, results)
end
if source.special == '_G' then
eachFieldOfLibrary(results)
end
if library.object[source.type] then
eachFieldInLibrary(source, library.object[source.type], results)
end
return results
end
function vm.eachField(source, callback)
local cache = vm.cache.eachField[source]
if cache ~= nil then
for i = 1, #cache do
callback(cache[i])
end
return
end
local unlock = vm.lock('eachField', source)
if not unlock then
return
end
cache = eachField(source) or false
vm.cache.eachField[source] = cache
unlock()
for i = 1, #cache do
callback(cache[i])
end
end
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